LoRaWAN-demo-72 - Application example using LoRaWAN-lib MAC layer i…

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Semtech / Mbed 2 deprecated LoRaWAN-demo-72

Application example using LoRaWAN-lib MAC layer implementation

Dependencies: mbed LoRaWAN-lib SX1272Lib

LoRaWAN-demo is a ClassA device example project using LoRaWAN-lib and SX1272Lib libraries.

This demo application sends a frame every 4 to 6 seconds (randomly) and displays its current status using a serial port as display(VT100).

The serial port settings are as shown in below image. To access the serial port settings please click on "Setup" menu and then "Serial port..."

/media/uploads/mluis/serial_port_settings.png

The terminal window should be setup as shown in below image. To access the terminal window settings please click on "Setup" menu and then "Terminal..."

/media/uploads/mluis/terminal_window_settings.png

The image below shows the VT100 application status.

Application main screen

The application gives the possibility to either activate the device using

Over The Air Activation (OTAA)
Personalization activation (PA)

The activation mode can be adjusted in Comissioning.h by changing the following parameter:

/*!
 * When set to 1 the application uses the Over-the-Air activation procedure
 * When set to 0 the application uses the Personalization activation procedure
 */
#define OVER_THE_AIR_ACTIVATION                     1

The application gives the possibility to select which kind of network we are connecting to.

Public Network (true)
Private Network (false)

The netork type can be changed as follows:

/*!
 * Indicates if the end-device is to be connected to a private or public network
 */
#define LORAWAN_PUBLIC_NETWORK                      true

OTAA
When OTAA is selected the user must porvide a device EUI, an application EUI and an application key.
These can be adjusted by changing the following parameters:

/*!
 * Mote device IEEE EUI (big endian)
 */
#define LORAWAN_DEVICE_EUI                          { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88 }

/*!
 * Application IEEE EUI (big endian)
 */
#define LORAWAN_APPLICATION_EUI                     { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }

/*!
 * AES encryption/decryption cipher application key
 */
#define LORAWAN_APPLICATION_KEY                     { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C }

PA
When PA is selected the user must porvide a network ID, a device address, a network session key and an application session key.
These can be adjusted by changing the following parameters:

/*!
 * Current network ID
 */
#define LORAWAN_NETWORK_ID                          ( uint32_t )0

/*!
 * Device address on the network (big endian)
 */
#define LORAWAN_DEVICE_ADDRESS                      ( uint32_t )0x12345678

/*!
 * AES encryption/decryption cipher network session key
 */
#define LORAWAN_NWKSKEY                             { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C }

/*!
 * AES encryption/decryption cipher application session key
 */
#define LORAWAN_APPSKEY                             { 0x2B, 0x7E, 0x15, 0x16, 0x28, 0xAE, 0xD2, 0xA6, 0xAB, 0xF7, 0x15, 0x88, 0x09, 0xCF, 0x4F, 0x3C }

On top of main.c the user has the possibility to tweak some application settings such as:

Join requests transmission frequency
Frames transmission frequency
Application default datarate
Confirmed or Unconfirmed frames transmission
ADR (Adaptive Datarate) ON/OFF
Application port to be used by the transmitted frames

The join requests transmission frequency can be adjusted by changing the follwoing parameter:

/*!
 * Join requests trials duty cycle.
 */
#define OVER_THE_AIR_ACTIVATION_DUTYCYCLE           10000000  // 10 [s] value in us

The frame transmission frequency can be adjusted by changing the follwoing parameters:

/*!
 * Defines the application data transmission duty cycle. 5s, value in [us].
 */
#define APP_TX_DUTYCYCLE                            5000000

/*!
 * Defines a random delay for application data transmission duty cycle. 1s,
 * value in [us].
 */
#define APP_TX_DUTYCYCLE_RND                        1000000

The frame transmission scheduling is then executed as follows:

        if( ScheduleNextTx == true )
        {
            ScheduleNextTx = false;
            // Schedule next packet transmission
            TxDutyCycleTime = APP_TX_DUTYCYCLE + randr( -APP_TX_DUTYCYCLE_RND, APP_TX_DUTYCYCLE_RND );
            TimerSetValue( &TxNextPacketTimer, TxDutyCycleTime );
            TimerStart( &TxNextPacketTimer );
        }

The application default datarate can be adjusted by changing the following parameter:

Quote:

When ADR is off this setting is the fixed datarate that will be used by the application.
When ADR is on this setting is the initial datarate used by the application.

/*!
 * Default mote datarate
 */
#define LORAWAN_DEFAULT_DATARATE                    DR_0

The transmitted frame contents will depend on LORAWAN_CONFIRMED_MSG_ON value.

/*!
 * LoRaWAN confirmed messages
 */
#define LORAWAN_CONFIRMED_MSG_ON                    true

If LORAWAN_CONFIRMED_MSG_ON equals false then the application payload is one byte corresponding to the AppLed state.
If LORAWAN_CONFIRMED_MSG_ON equals true then the application payload is six bytes corresponding to the AppLed state, Downlink counter (unsigned 16 bits), received RSSI (signed 16 bits) and received SNR (signed 8 bits).

/*!
 * \brief   Prepares the payload of the frame
 */
static void PrepareTxFrame( uint8_t port )
{

    switch( port )
    {
    case 15:
        {
            AppData[0] = AppLedStateOn;
            if( IsTxConfirmed == true )
            {
                AppData[1] = LoRaMacDownlinkStatus.DownlinkCounter >> 8;
                AppData[2] = LoRaMacDownlinkStatus.DownlinkCounter;
                AppData[3] = LoRaMacDownlinkStatus.Rssi >> 8;
                AppData[4] = LoRaMacDownlinkStatus.Rssi;
                AppData[5] = LoRaMacDownlinkStatus.Snr;
            }
        }
        break;
    case 224:
...
}

The ADR enabling/disabling can be adjusted by changing the following parameter:

/*!
 * LoRaWAN Adaptive Data Rate
 *
 * \remark Please note that when ADR is enabled the end-device should be static
 */
#define LORAWAN_ADR_ON                              1

The application port can be adjusted by changing the following parameter:

/*!
 * LoRaWAN application port
 */
#define LORAWAN_APP_PORT                            15

app/vt100.h@0:45496a70a8a5, 2016-01-07 (annotated)

Committer:: mluis
Date:: Thu Jan 07 15:11:08 2016 +0000
Revision:: 0:45496a70a8a5
Child:: 6:0e8d45c5cbbc

Initial commit

Who changed what in which revision?

User	Revision	Line number	New contents of line
mluis	0:45496a70a8a5	1	/*
mluis	0:45496a70a8a5	2	/ _____) _ \| \|
mluis	0:45496a70a8a5	3	( (____ _____ ____ _\| \|_ _____ ____\| \|__
mluis	0:45496a70a8a5	4	\____ \\| ___ \| (_ _) ___ \|/ ___) _ \
mluis	0:45496a70a8a5	5	_____) ) ____\| \| \| \|\| \|_\| ____( (___\| \| \| \|
mluis	0:45496a70a8a5	6	(______/\|_____)_\|_\|_\| \__)_____)\____)_\| \|_\|
mluis	0:45496a70a8a5	7	(C)2015 Semtech
mluis	0:45496a70a8a5	8
mluis	0:45496a70a8a5	9	Description: VT100 terminal support class
mluis	0:45496a70a8a5	10
mluis	0:45496a70a8a5	11	License: Revised BSD License, see LICENSE.TXT file include in the project
mluis	0:45496a70a8a5	12
mluis	0:45496a70a8a5	13	Maintainer: Miguel Luis and Gregory Cristian
mluis	0:45496a70a8a5	14	*/
mluis	0:45496a70a8a5	15	#ifndef __VT100_H__
mluis	0:45496a70a8a5	16	#define __VT100_H__
mluis	0:45496a70a8a5	17
mluis	0:45496a70a8a5	18	#ifndef STRING_STACK_LIMIT
mluis	0:45496a70a8a5	19	#define STRING_STACK_LIMIT 120
mluis	0:45496a70a8a5	20	#endif
mluis	0:45496a70a8a5	21
mluis	0:45496a70a8a5	22	/**
mluis	0:45496a70a8a5	23	* Implements VT100 terminal commands support.
mluis	0:45496a70a8a5	24	* Implments also the same behaviour has RawSerial class. The only difference
mluis	0:45496a70a8a5	25	* is located in putc fucntion where writeable check is made befor sending the character.
mluis	0:45496a70a8a5	26	*/
mluis	0:45496a70a8a5	27	class VT100 : public SerialBase
mluis	0:45496a70a8a5	28	{
mluis	0:45496a70a8a5	29	public:
mluis	0:45496a70a8a5	30	enum TextAttributes
mluis	0:45496a70a8a5	31	{
mluis	0:45496a70a8a5	32	ATTR_OFF = 0,
mluis	0:45496a70a8a5	33	BOLD = 1,
mluis	0:45496a70a8a5	34	USCORE = 4,
mluis	0:45496a70a8a5	35	BLINK = 5,
mluis	0:45496a70a8a5	36	REVERSE = 7,
mluis	0:45496a70a8a5	37	BOLD_OFF = 21,
mluis	0:45496a70a8a5	38	USCORE_OFF = 24,
mluis	0:45496a70a8a5	39	BLINK_OFF = 25,
mluis	0:45496a70a8a5	40	REVERSE_OFF = 27,
mluis	0:45496a70a8a5	41	};
mluis	0:45496a70a8a5	42
mluis	0:45496a70a8a5	43	enum Colors
mluis	0:45496a70a8a5	44	{
mluis	0:45496a70a8a5	45	BLACK = 0,
mluis	0:45496a70a8a5	46	RED = 1,
mluis	0:45496a70a8a5	47	GREEN = 2,
mluis	0:45496a70a8a5	48	BROWN = 3,
mluis	0:45496a70a8a5	49	BLUE = 4,
mluis	0:45496a70a8a5	50	MAGENTA = 5,
mluis	0:45496a70a8a5	51	CYAN = 6,
mluis	0:45496a70a8a5	52	WHITE = 7,
mluis	0:45496a70a8a5	53	};
mluis	0:45496a70a8a5	54
mluis	0:45496a70a8a5	55	VT100( PinName tx, PinName rx ): SerialBase( tx, rx )
mluis	0:45496a70a8a5	56	{
mluis	0:45496a70a8a5	57	this->baud( 115200 );
mluis	0:45496a70a8a5	58	// initializes terminal to "power-on" settings
mluis	0:45496a70a8a5	59	// ESC c
mluis	0:45496a70a8a5	60	this->printf( "\x1B\x63" );
mluis	0:45496a70a8a5	61	}
mluis	0:45496a70a8a5	62
mluis	0:45496a70a8a5	63	void ClearScreen( uint8_t param )
mluis	0:45496a70a8a5	64	{
mluis	0:45496a70a8a5	65	// ESC [ Ps J
mluis	0:45496a70a8a5	66	// 0 Clear screen from cursor down
mluis	0:45496a70a8a5	67	// 1 Clear screen from cursor up
mluis	0:45496a70a8a5	68	// 2 Clear entire screen
mluis	0:45496a70a8a5	69	this->printf( "\x1B[%dJ", param );
mluis	0:45496a70a8a5	70	}
mluis	0:45496a70a8a5	71
mluis	0:45496a70a8a5	72	void ClearLine( uint8_t param )
mluis	0:45496a70a8a5	73	{
mluis	0:45496a70a8a5	74	// ESC [ Ps K
mluis	0:45496a70a8a5	75	// 0 Erase from the active position to the end of the line, inclusive (default)
mluis	0:45496a70a8a5	76	// 1 Erase from the start of the screen to the active position, inclusive
mluis	0:45496a70a8a5	77	// 2 Erase all of the line, inclusive
mluis	0:45496a70a8a5	78	this->printf( "\x1B[%dK", param );
mluis	0:45496a70a8a5	79	}
mluis	0:45496a70a8a5	80
mluis	0:45496a70a8a5	81	void SetAttribute( uint8_t attr )
mluis	0:45496a70a8a5	82	{
mluis	0:45496a70a8a5	83	// ESC [ Ps;...;Ps m
mluis	0:45496a70a8a5	84	this->printf( "\x1B[%dm", attr );
mluis	0:45496a70a8a5	85	}
mluis	0:45496a70a8a5	86
mluis	0:45496a70a8a5	87	void SetAttribute( uint8_t attr, uint8_t fgcolor, uint8_t bgcolor )
mluis	0:45496a70a8a5	88	{
mluis	0:45496a70a8a5	89	// ESC [ Ps;...;Ps m
mluis	0:45496a70a8a5	90	this->printf( "\x1B[%d;%d;%dm", attr, fgcolor + 30, bgcolor + 40 );
mluis	0:45496a70a8a5	91	}
mluis	0:45496a70a8a5	92
mluis	0:45496a70a8a5	93	void SetCursorMode( uint8_t visible )
mluis	0:45496a70a8a5	94	{
mluis	0:45496a70a8a5	95	if( visible == true )
mluis	0:45496a70a8a5	96	{
mluis	0:45496a70a8a5	97	// ESC [ ? 25 h
mluis	0:45496a70a8a5	98	this->printf( "\x1B[?25h" );
mluis	0:45496a70a8a5	99	}
mluis	0:45496a70a8a5	100	else
mluis	0:45496a70a8a5	101	{
mluis	0:45496a70a8a5	102	// ESC [ ? 25 l
mluis	0:45496a70a8a5	103	this->printf( "\x1B[?25l" );
mluis	0:45496a70a8a5	104	}
mluis	0:45496a70a8a5	105	}
mluis	0:45496a70a8a5	106
mluis	0:45496a70a8a5	107	void SetCursorPos( uint8_t line, uint8_t col )
mluis	0:45496a70a8a5	108	{
mluis	0:45496a70a8a5	109	// ESC [ Pl ; Pc H
mluis	0:45496a70a8a5	110	this->printf( "\x1B[%d;%dH", line, col );
mluis	0:45496a70a8a5	111	}
mluis	0:45496a70a8a5	112
mluis	0:45496a70a8a5	113	void PutStringAt( uint8_t line, uint8_t col, const char *s )
mluis	0:45496a70a8a5	114	{
mluis	0:45496a70a8a5	115	this->SetCursorPos( line, col );
mluis	0:45496a70a8a5	116	this->printf( "%s", s );
mluis	0:45496a70a8a5	117	}
mluis	0:45496a70a8a5	118
mluis	0:45496a70a8a5	119	void PutCharAt( uint8_t line, uint8_t col, uint8_t c )
mluis	0:45496a70a8a5	120	{
mluis	0:45496a70a8a5	121	this->SetCursorPos( line, col );
mluis	0:45496a70a8a5	122	this->printf( "%c", c );
mluis	0:45496a70a8a5	123	}
mluis	0:45496a70a8a5	124
mluis	0:45496a70a8a5	125	void PutHexAt( uint8_t line, uint8_t col, uint16_t n )
mluis	0:45496a70a8a5	126	{
mluis	0:45496a70a8a5	127	this->SetCursorPos( line, col );
mluis	0:45496a70a8a5	128	this->printf( "%X", n );
mluis	0:45496a70a8a5	129	}
mluis	0:45496a70a8a5	130
mluis	0:45496a70a8a5	131	void PutBoxDrawingChar( uint8_t c )
mluis	0:45496a70a8a5	132	{
mluis	0:45496a70a8a5	133	this->printf( "\x1B(0%c\x1b(B", c );
mluis	0:45496a70a8a5	134	}
mluis	0:45496a70a8a5	135
mluis	0:45496a70a8a5	136	bool Readable( void )
mluis	0:45496a70a8a5	137	{
mluis	0:45496a70a8a5	138	return this->readable( );
mluis	0:45496a70a8a5	139	}
mluis	0:45496a70a8a5	140
mluis	0:45496a70a8a5	141	uint8_t GetChar( void )
mluis	0:45496a70a8a5	142	{
mluis	0:45496a70a8a5	143	return this->getc( );
mluis	0:45496a70a8a5	144	}
mluis	0:45496a70a8a5	145
mluis	0:45496a70a8a5	146	/*
mluis	0:45496a70a8a5	147	* RawSerial class implmentation copy.
mluis	0:45496a70a8a5	148	*/
mluis	0:45496a70a8a5	149	/** Read a char from the serial port
mluis	0:45496a70a8a5	150	*
mluis	0:45496a70a8a5	151	* @returns The char read from the serial port
mluis	0:45496a70a8a5	152	*/
mluis	0:45496a70a8a5	153	int getc( )
mluis	0:45496a70a8a5	154	{
mluis	0:45496a70a8a5	155	return _base_getc();
mluis	0:45496a70a8a5	156	}
mluis	0:45496a70a8a5	157
mluis	0:45496a70a8a5	158	/** Write a char to the serial port
mluis	0:45496a70a8a5	159	*
mluis	0:45496a70a8a5	160	* @param c The char to write
mluis	0:45496a70a8a5	161	*
mluis	0:45496a70a8a5	162	* @returns The written char or -1 if an error occured
mluis	0:45496a70a8a5	163	*/
mluis	0:45496a70a8a5	164	int putc( int c )
mluis	0:45496a70a8a5	165	{
mluis	0:45496a70a8a5	166	while( this->writeable( ) != 1 );
mluis	0:45496a70a8a5	167	return _base_putc( c );
mluis	0:45496a70a8a5	168	}
mluis	0:45496a70a8a5	169
mluis	0:45496a70a8a5	170	/** Write a string to the serial port
mluis	0:45496a70a8a5	171	*
mluis	0:45496a70a8a5	172	* @param str The string to write
mluis	0:45496a70a8a5	173	*
mluis	0:45496a70a8a5	174	* @returns 0 if the write succeeds, EOF for error
mluis	0:45496a70a8a5	175	*/
mluis	0:45496a70a8a5	176	int puts( const char *str )
mluis	0:45496a70a8a5	177	{
mluis	0:45496a70a8a5	178	while( *str )
mluis	0:45496a70a8a5	179	putc( *str++ );
mluis	0:45496a70a8a5	180	return 0;
mluis	0:45496a70a8a5	181	}
mluis	0:45496a70a8a5	182
mluis	0:45496a70a8a5	183	// Experimental support for printf in RawSerial. No Stream inheritance
mluis	0:45496a70a8a5	184	// means we can't call printf() directly, so we use sprintf() instead.
mluis	0:45496a70a8a5	185	// We only call malloc() for the sprintf() buffer if the buffer
mluis	0:45496a70a8a5	186	// length is above a certain threshold, otherwise we use just the stack.
mluis	0:45496a70a8a5	187	int printf( const char *format, ... )
mluis	0:45496a70a8a5	188	{
mluis	0:45496a70a8a5	189	std::va_list arg;
mluis	0:45496a70a8a5	190	va_start( arg, format );
mluis	0:45496a70a8a5	191	int len = vsnprintf( NULL, 0, format, arg );
mluis	0:45496a70a8a5	192	if( len < STRING_STACK_LIMIT )
mluis	0:45496a70a8a5	193	{
mluis	0:45496a70a8a5	194	char temp[STRING_STACK_LIMIT];
mluis	0:45496a70a8a5	195	vsprintf( temp, format, arg );
mluis	0:45496a70a8a5	196	puts( temp );
mluis	0:45496a70a8a5	197	}
mluis	0:45496a70a8a5	198	else
mluis	0:45496a70a8a5	199	{
mluis	0:45496a70a8a5	200	char *temp = new char[len + 1];
mluis	0:45496a70a8a5	201	vsprintf( temp, format, arg );
mluis	0:45496a70a8a5	202	puts( temp );
mluis	0:45496a70a8a5	203	delete[] temp;
mluis	0:45496a70a8a5	204	}
mluis	0:45496a70a8a5	205	va_end( arg );
mluis	0:45496a70a8a5	206	return len;
mluis	0:45496a70a8a5	207	}
mluis	0:45496a70a8a5	208
mluis	0:45496a70a8a5	209	private:
mluis	0:45496a70a8a5	210
mluis	0:45496a70a8a5	211	};
mluis	0:45496a70a8a5	212
mluis	0:45496a70a8a5	213	#endif // __VT100_H__

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	03 Dec 2015
Imports:	2121
Forks:	13
Commits:	8
Dependents:	0
Dependencies:	3
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